Method for measurement in wireless communication system and apparatus for the same

An apparatus operating in a wireless communication system comprising:

• a Radio Frequency (RF) unit transmits and receives radio signals;
• and
• a processor operatively coupled to the RF unit, wherein the processor is configured for:
• camping on a serving cell operating on a serving frequency;
• receiving a reselection priority indication, the reselection priority indication indicating signaled priorities for the serving frequency and a inter-frequency;
• determining whether to apply an implicit highest priority to the serving frequency for measurement;
• and
• measuring the inter-frequency based on the signaled priorities,
• wherein the determining comprises:
• wherein if the apparatus receives a logged measurement configuration for a logged Minimization Driving Test (MDT) and a type of the serving cell is a predetermined type, determining to apply a signaled priority for the serving frequency indicated by the reselection priority indication.